#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>

int main()
{
    char m;
    scanf("%c", &m);

    if ((m == 'a' || m == 'A') || (m == 'i' || m == 'I') || (m == 'o' || m == 'O') || (m == 'e' || m == 'E') || (m == 'u' || m == 'U'))
    {
        printf("Vowel\n");
    }
    else
    {
        printf("Consonant\n");
    }

    return 0;
}